Patrick Priebe built a pulse laser gun which can send a 1 kW pulse of coherent infrared light through a razorblade, sheets of plastic, and half a centimeter of styrofoam at a range of up to three meters for dark surfaces.

Ahhh yeah ya'll, I hope everybody brought along an extra change of clothes today -things are about to get sweaty and sexy- because we're gonna' be discussing lasers, folks, specifically how one might turn a laser into a tractor beam.